Multiple control system for brakes.



A. SUNDH. Q MULTIPLE CONTROL SYSTEM FOR BRAKES.

APPLICATION' men 1km-11.1913. v Patnted May 9,1916.

2 SHEETS-SHEET l.

mazza.'

-A. sUNnH. muLPLE-comm vSYSTEM 'Foa BRAKES.

. Armenian H'Lfeo, mm1. para.

Patented May 9,1916.

' A2 SHEETS-SHEET 2.

A77' HIVEY S''GUST SUNBH, OF

HASTINGS-UON-HUSN YORK, SSIS-NOR TO DTIS VATIBJ GQMAY, A CORPORATIN DE NRW' JERSEY.

MULTPL CNTROL SYSTEM. FOR

" No. 45?.. filed January 3.a..

,unit power tzmsmission mechanism,

dapted tu @is-f R-Prn-ac'fe. 11 naf-ed 'to herame A. This b'ackei; is farmed with a cupshapec mem bei. im which is heated a Coil spring l27 the ontw ein@ of which been@ against the eve The. inner' emi' @if h@ spying 12 bem-s agms a. Stop in 'be BUI'MIQ l. set lsexves to wjus he puim of the Stap 139 and emby adjust the mansion of h@ spying. A st uw@ may be provided o held he set Scew in its adjusted position.

extends to the forward part of the machine.

n ply current to the The forward end of this link is connected' to a 'foot lever 22, located in any convenient position for operation. A coil sp1-ing 23 connected to the foot lever serves to hold it normally -in its upperposition. The pins 19 and 20 are solocated withrespect` to the lever 17 that thegcore 'of the brake magnet B may be moved' in or out without disturbing the foot lever 22. lVhen the foot level' is depressed the lever 17 will exert pressure against the pin 19, and serve to applythe brakes. If the brake magnet is at this time denergized, and the brakes are already applied, the braking action may be increased by pressure on the foot lever. The latter may also be operated in opposition to the brake magnet if desired, as for example, in case of an emergency, when it is desired to quickly apply the brakes.

Referring now to Fig. 4, a small generator lVI is provided for each car or unit to supbrake magnets B. This f generator may be located in any` convenient position,'and is connected in any suitable way to the engine E. A belt or chain 24, connects the' generator with the shaft of the engine, as shown in Fig. 1. This generator, is a shunt Wound machine, having a shunt field coil 26. A switch V27 may be provided to disconnect the generator from the various l circuits leading therefrom whenever desired.

The manually operable controller C comprises a lever 28 which carries a contact strip 29 adapted to engage the electrical contacts 30, 31, etc.v Sections 32 and33 are resistances for the electromagnet B, controlling the brake mechanism. The system of circuits Will first be described in connection with the electromagnetic brake operation of av single car or unit: Assuming that the controller lever 28 1s 1n its central or oii" position, as shown,

` the brake mechanism will be applied. If it be thereupon moved in a clockwise direction as viewed in the figure, for example, it will engage successively first the series of contacts 30, connected by the resistance coils 3 2. This establishes a circuit from the generator M to the brake magnet coil as follows: from the commutator brush 34, through the conductor 35, switch 27, conductorBG, contact ring 37, switch lever' 29, contacts 30, resistance coilsv32, Contact 31, conductor 38, coil of brake magnet 8, conductor 39, switch 27, conductor 40 to the other brush 41. The coil B i plurality of switch levers 42,

willnovv receive current, which is reduced by the resistance 32, so that the brakes are only partially operated or released. If the handle be moved over the contacts 3.0, the

moved in a counter-clockwise directiom it.

aiiiects the operation of the brake mechanism in the same manner as described above. When a plurality of cars or units are connected to be controlled from a. single point, the electrical circuits for their respective electromagnetic brake operating devices,

- etc., are connected in parallel by a conductor a. The generators M may also be connected in parallel byconductors b and c. These conductors a, Z) and vc may be supported and connected together in any suitable way, as for example, as shown in my original Patent No. 1,055,569. l'Vith the circuits' thus connected, the operation ot' one controlling lever serif'esjo control the said electromagnetic brake operating devices for all the `cars or units. I also'prvide an arrangement, em-

ployed to vary the resistance in the circuits y for the additional brake magnets. Resistances 32*1 and 32b are adaptedto be con` nected in parallel with the resistance 32. A each havinga pivot 43, are connected to an operating rod 44, movable longitudinally to. impart a. parallel movement to the switch levers.' 1When the rod 44 is moved inward from the position shown'the switch levers first engage a series of contacts 45, and thereby connect the resistances 32a and 33in parallel with the resistances 32 and A further movement of the rod 44 brings the switch levers into.engagement with a series of contacts 46, and thereby connects the resistances 32b and 33b in parallel with the other resistances. When a single car or unit is. in use the resistances 32and 33 only are in the circuit, the operating rod 44 being in the off position shown in Fig. 2. lVhentwo units are connected for operation together the resistances 322l and 33 are introduced in parallel with the resista-hoes 32 and 33 in order to renieaeae are also introduced for the same purpose. It will bel understood that as many addi- 'tional sections of resistance may be added and controlled by a single operatingrod or lever as desired, the number depending upon the number of units 1t may be -desirable to use 1n a single series or train.

The electrical circuit for a plurality ci."

the said unit' as before described. The circuit for .the brake magnet of the other unit `branches from the conductor 38 at the 4junctionl38 and may be traced through Vconductors' 38a, a, 38b of thesecond unit and through the niagnet B of the second truck. The brake devices will therefore all be op erated simultaneously. .In like manner each `step in the control of the electromagnetic brake operating device Vis effected simultaneously for all the cars or units.

It will be seen from' the foregoing description that the invention comprises a multiple system ofclectrical control for electromagnetic brake operating devices adapted for use on cars or other units, in Which a pluvrality of cars or units are each equipped with independently operative brake mechanism and a manually operable controlling' device operable from a single point, when the cars or units are connected to form a train, whereby the said brake mechanism of all the units may be controlled simultane ously. f

The. present invention might also be adapted for various other 4uses by such,`

changes and modifications as would be ivithin the skill of the art, and it is to be further understood that various changes in details of construction and the arrangement of parts might readilybe made by those skilled in the art without departing from the spirit and scope of the invention. l wish therefore not to be; limited to the particular con struction herein set forth. What l claim as new'and desire to secure by Letters Patent oit' the UnitedStates is z- 1; The combination with a plurality of vehicles connected to form a train, spring applied brakes for each vehicle, electro-magnetic brake operating' devices connected to the brakes, means for supplying current to operate said devices, and means forsin'iuibI taneously varying the supply of current to all of said brake operating devices, and thereby varying in synchronism the power with which the brakes are applied or held in applied position.

2. The combination With a plurality of devices to be operated, brakes therefor, electro-magnetic brake operating mechanism,

means for supplying' current to operate said mechanism, means for operatlngany de sired number oit said devices in unison, re-

sistance, and means for Placing in circuit with the brake mechanism portions of said resistance coi-respending),- to the number oi'- said devices operated in unisorn 3. The combination with a pluralityA ot`v yoperate said devices, and means operable iorl either direction ofthe trains travel, for m'ultaneously varying' the supply lof cur rent to all of sald brake opsluiting' devices,

and thereby varying' in synchronism .the

power with which the brakes are applied or held in applied position.`

el. ln combination, a. plurality ol self propelled vehicles connected together to form a train, means i'or generating electric current, brake mechanisi'n for each car'and operatcd by said current, a controlling device carried by each car operable manually to vary the supply ol current to the brake operating device, means carried by one 'of said -cars and operable manually to simultaneously vary the current supply to all. of the brake operating; devices for either direction oi vthe trains travel. l

Inv combination, a plurality propelled vehicles connected. together to .1 form a train, means for generating electric current, brake mechanism for each car and operated by said current, a controlling) de vice carried by each car operable manually to vary the supply of current to the brake operating device, means carried by cach one 'of theY above-mentioned vehicles, which, when used in conjunction with the first named device of. any of the said vehicles is operable 'from a single point to vary the supply of current to all of the brake 0pcrating devices simultaneously.

6. The combination with an electromechanical brake, means orreleasing and ap pli/ing the brake, comprising'. brake pulleys, brake shoes, a bell crank lever for each brake shoe and connected thereto, an electromagnet device.y a magnet core, pivoted levers having link connections to each ofthe bell crank levers, and links connecting,` the latter named levers with the magnet core to effect the releasing' of the brake shoes simultaneously when the magnet Windingr is energize-d to attract its core to an operative position. 7. The combination with a vehicle of the self propelling type, a brake device therefor 'comprising an electromagnet, a system of leverage operative to release the brake mechanism, springs operative through the above mentioned .system of leverage'to apply the brake, a device operable manually to apply additional braking power to the brake, said rae ` device comprisinga. manual lever, and a the said second lever, a connection between said second lever ancl the said system of leverage, said connection being1 operable to allow lost motion between the second lever and the system of levers Whenoplerated to release the brake, but will operate to apply vthe brake when the manual lever is, oper.

ated. Inl-testimony whereof, Ihave signed my name to 'this specification in theY presence of,

two subscribing witnesses.

f l AUGUST SUNDEL Witnesses: f

VVALTR C. STRANG, y JAMES Gr. Bia'riunmz.` 

